The following insecticides are used in one or more parts of the world: flonicamid, buprofezine, pymetrozine, bifenthrin, deltamethrin, lambda cyhalothrin, imidacloprid, thiamethoxam, acetamiprid, clothianidin, chlorpyrifos, dimethoate, and fipronil.
Some products are highly toxic for water organisms.
Spraying applications are easier after drainage, and moreover, chances of secondary infections rise at the presence of standing water.
Renew irrigation 1-2 days post application. When it comes to irrigation, a common rule in many places is to irrigate as hairline cracks appear on the surface of soil.